Demarcus launches a small weight into the air. The weight takes 6.4 seconds to reach the ground again. At what time did the weight have a vertical velocity of 0 meters per second?

Demarcus Launches A Small Weight Into The Air. The Weight Takes 6.4 Seconds To Reach The Ground Again.

Answers

Answer 1
The answer is A.
During the process, the only force imposed on the small weight is gravity.
The time from launching to the highest is the same as the time from the highest to the ground. And the vertical velocity at 0 m/s is at the highest position.

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saan natin maaaring ipinta ang myural

Answers

Answer:

wall,ceiling or other permanent surfaces

Que sucede con el trabajo obtenido conforme aumenta el ángulo?

Answers

Can you show me the problem?

What acceleration would you expect a 100 kg individual to experience from a 1000N force?

Answers

Answer: 10 m/2^2

F=ma

Explanation:

Force = 1000N

1 N is 1 (kg*m/s^2)

Mass = 100kg

F=ma

a = F/m

a = (1000kg*m/s^20/(100kg)

a = 10 m/s^2

In induction, what charge does a neutral substance gain compared to the object brought near it?

Answers

Explanation:

In induction, what charge does a neutral substance gain compared to the object brought near it?

The neutral object gains the same type of charge as the object that touched it because the electrons move from one object to the other (Figure 10.16). Induction is the movement of electrons within a substance caused by a nearby charged object, without direct contact between the substance and the object.

The charge gained by the neutral substance, gained compared to the object brought near it, had the same kind of charge that was present when it touched it.

What is induction?

The alteration of the distribution of electric charge on a substance is caused by the effect of induction. A negatively charged object brought close to an electrically neutral object causes a positive charge on the near side and a negative charge on the far side of the neutral object as a result of the electric force between charged particles that make up materials.

This very little polarization, or separation of charge, lessens the electric field inside the dielectric.

Because the electrons go from one thing into the next, the neutral object acquires the same kind of charge that was present when it touched it. Lacking physical touch, induction is the movement of electrons within a substance as a result of a nearby charged item.

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what is his angular displacement during a 1.0 s time interval?

Answers

Answer:

The angular velocity is: (2π radians) ⁄ (4.3 sec) = 1.461 rad/sec

The angular displacement is: (1.461 rad/sec)(1 sec) = 1.461 radians

Explanation:

If you apply a force of 10 N to a table and push it 5 m in 10 s, how much power did you deliver? Multiple choice question. A) 50 W B) 25 W C) 500 W D) 5 W

Answers

Answer:

D) 5 W

Explanation:

Force=10N

Distance =5m

Time=10s

Power =?

But Power= Work done/Time taken

P= W/s

W= Fxd=10x5=50

P=50/10

P=5W

Urgent need help 100 points

Suppose that scientists observe violent gas eruptions on a planet with an acceleration due to gravity of 3.6 m/s2.

The jets throw sand and dust about 75 m

above the surface.


What is the speed i

of the material just as it leaves the surface?


Scientists estimate that the jets originate as high‑pressure gas speeds through vents just below ground at about 150 km/h.

How much energy per kilogram of material does the jet lose to nonconservative forces as the high‑speed matter forces its way to the surface and into the air?

Answers

Answer: The velocity with which the sand throw is 24.2 m/s.

Explanation:

Explanation:

acceleration due to gravity, a =  3.9 m/s2

height, h = 75 m

final velocity, v = 0

Let the initial  velocity at the time of throw is u.

Use third equation of motion

The velocity with which the sand throw is 24.2 m/s.

explain how siphon works with atmospheric pressure?​

Answers

Answer:

A siphon is a tube that allows liquid to travel upward, above the surface of the origin reservoir, then downwards to a lower level without using a pump. When a certain amount of water moves over the bend in the siphon, gravity pulls it down on the longer leg lowers the atmospheric pressure in the bend of the siphon.

Mark me as brainlest, please?

Explanation:

What force does the gravitational attraction of earth exert on a 12.8kg object, such as a toolbox loaded with tools

Answers

Answer:

16

Explanation:

knjdjdedjddjdddejjjjjjjj

Answers

U hi why exactly are you trying to do

an object applies force of 500n on the area if 10m². find the force exerted​

Answers

Exerted force is called Pressure.

From,

Pressure = Force/Area

P = 500N/10m²

P = 50N/m²

The force exerted is 50N/m²

Molly does not have many activities after school, so she has plenty of time to exercise. She has never been very athletic and plans to start by exercising two hours a day five days a week. Is this a good plan?


OPTIONS:

A.
Yes, she should dive right in.
B.
No, no one can exercise that much.
C.
Yes, if she has the time there is no excuse.
D.
No, smaller goals would be better.

PLEASE NO LINKS

Answers

The answer is D No, smaller goals would be better

A bus is running with a velocity of 72 km.hr on seeing a a boy on the road tom a head the driver jammed on the brakes and the bug Stopped witts uniform retradtion 5 m/s2 calculate the distance travelled by bus and discuss whether accident took place or not. ​

Answers

Answer:

Answer is 40m

Explanation:

The explanation is attached in the image below.

What does it mean when an
electromagnetic wave has low energy?

A. it has a long wavelength

B. It has a short wavelength

C.it has a short amplitude

D. It has a high frequency

Answers

Answer:

A

Explanation:

Low energy photons (such as radio photons) behave more like waves, while higher energy photons (such as X-rays) behave more like particles.

Please give brainliest

Answer:

B. It has a short amplitude.

:)

Martine also has an eraser.it has a mass of 3g,and a volume if 1cm3.what is its density

Answers

Answer:

3g/cm³

Explanation:

Use the formula:

density = mass ÷ volume

Substitute (plug in) the values:

density = 3 ÷ 1 = 3g/cm³

What is the voltage between two short-circuited points? PLZ HELP ASAP​

Answers

Answer

It states that V/I = R where V is potential difference R is resistance and I is the current flowing across the terminals.Now when short circuit the resistance ...

Explanation:

X=(150^2•sin(2•42))/9.8

Answers

Answer:

2283.3410863

Explanation:

Answer:

2283.341086

Explanation: Just plug the equation into the calculator as is

Which metals have similar chemical properties? Check all that apply.

Answers

Answer:

yes

Explanation:

barium, beryllium, radium, and calcium.

a person lifts a package weighing 75 N if she lifts it 1.2m off the floor what work has she done ?

Answers

Answer:

W = 90 J

Explanation:

Data:

Force (F) = 75 NDistance (d) = 1.2 mWork (W) = ?

Use the formula:

W = F * d

Replace and solve:

W = 75 N * 1.2 mW = 90 J

The work done was 90 Joules.

Greetings.

why is the saturated lapse rate less than the dry adiabatic lapse rate?

Answers

Answer:

(Hope this helps can I pls have brainlist (crown)☺️)

Explanation:

Lifting a saturated package causes it to expand and cool, resulting in vapour condensation. Condensation will release latent heat, partially counteracting the cooling. As a result, a saturated parcel's adiabatic lapse rate is smaller than an unsaturated parcel's.

Because moist air ascending condenses off its water vapour, the moist adiabatic lapse rate is lower than the dry adiabatic lapse rate (once saturation is attained). The air is considered to be saturated when the dew point temperature and air temperature are identical.

4. A desk with a mass of 10 kg is pushed across a floor with an acceleration of 4 m/s?. What
is the force on the desk? Use the equation F = ma.

Answers

40 N. If you’re using F=MA MxA would be 10x4 which would get you 40 N

Answer:

Below

Explanation:

All we need to do for this question is to plug in our values and solve!

      Force = mass x acceleration

      Force = 10 kg x 4 m/s^2

     Force = 40 Newtons or 40 N

If your teacher requires you to round to sig figs it would be :

    F = 4 x 10^1 N

Hope this helps!

a dog is running at 5.5 m/s then comes to a complete stop in 1.5 seconds. What is the dogs acceleration?

Answers

The dog's acceleration running at 5.5 m/s then comes to a complete stop in 1.5 seconds is 8.25m/s²

HOW TO CALCULATE ACCELERATION:

The acceleration of a moving object can be calculated by multiplying the velocity of the object by the time taken. That is;

Acceleration (m/s²) = speed (m/s) × time (s)

According to this question, a dog is running at 5.5 m/s then comes to a complete stop in 1.5 seconds. The acceleration can be calculated as follows:

Acceleration = 5.5 × 1.5

Acceleration = 8.25m/s²

Therefore, the dog's acceleration running at 5.5 m/s then comes to a complete stop in 1.5 seconds is 8.25m/s².

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NEED HELP!!!! 15 POINTS!!!!

Imagine that you are going to make an exercise routine. If your goal was to develop your health rather than one specific improvement, what should be in your plan?
A.
a focus on the benefits of stretching
B.
a variety of aerobic and anaerobic exercises
C.
a single exercise with increasing intensity
D.
an exercise that you have never tried before

PLEASE NO LINKS

Answers

Answer:

c

Explanation:

If the goal of the exercise routine is to develop overall health rather than focusing on one specific improvement, a well-rounded approach that addresses various aspects of fitness would be ideal.

This would involve a combination of different types of exercises to promote cardiovascular health, muscular strength, flexibility, and overall well-being. From the given options, the best choices would be:

B. A variety of aerobic and anaerobic exercises: This option is important because it incorporates both cardiovascular exercises (aerobic) and strength-building exercises (anaerobic), ensuring a balanced approach to fitness.

A. A focus on the benefits of stretching: Stretching is important for maintaining flexibility and preventing injuries. Incorporating stretching exercises, such as static and dynamic stretches, can contribute to overall health and mobility.

D. An exercise that you have never tried before: While not as essential as the first two options, trying new exercises can add variety and excitement to your routine. It can also engage different muscle groups and challenge your body in new ways.

C. A single exercise with increasing intensity: While progressively increasing the intensity of a single exercise can be part of a fitness plan, focusing solely on a single exercise may not provide the diverse benefits that a combination of exercises can offer. Variety is key to a well-rounded fitness routine.

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Math the words in the box with the sentences below.

Answers

In order of appearance on the table;

Magnetic force

Normal force

Gravity

String force

Friction

Contact force

Tension

Non Contact force

Static force

Applied force

please mark BRAINLIEST if I'm right.

How much work does a 60 Watt motor perform in 5 minutes?

Answers

Answer:

18000J or 18kJ

Explanation:

Use the formula:

work done or energy = power × time

power = 60Wtime = 5 mins = 300s (5 × 60)

Sub in the values:

work done or energy = 60 × 300 = 18000Answer = 18000J or 18kJ

Hope this helps!

At a race car driving event, a staff member notices that the skid marks left by the race car are

10.99 m long as it comes to a stop. The very experienced staff member knows that the

deceleration of a car when skidding is -42.61 m/s2. What can the staff member estimate for

the original speed of the race car if it came to a stop during the skid?

Answers

A car that experiences a deceleration of -41.62 m/s² and comes to a stop after 10.99 m has an initial velocity of 30.60 m/s.

A car experiences a deceleration (a) of -41.62 m/s² and comes to a stop (final velocity = v = 0 m/s) after 10.99 m (s).

We can calculate the initial velocity of the car (u) using the following kinematic equation.

[tex]v^{2} = u^{2} + 2as\\\\u = \sqrt[]{v^{2}-2as} = \sqrt[]{(0m/s)^{2}-2(-42.61m/s^{2} )(10.99m)} = 30.60m/s[/tex]

A car that experiences a deceleration of -41.62 m/s² and comes to a stop after 10.99 m has an initial velocity of 30.60 m/s.

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Suppose two ships start from point B and travel west. One ship travels at an average velocity of 35 km/h for 2.2 h. Another ship travels at an average velocity of 26 km/h for
2.5 h. What is the final position of each ship?

Answers

Answer:

Another ship travels at an average velocity of 26 km/h for

Explanation:

Ship one will cover a distance of 77 km after 2.2 hours and ship two will cover a distance of 65 km after 2.5 hours.

What are average speed and velocity?

The average speed of an object is the average distance it covers in a given length of time. The scalar number reflects the average speed. Direction can be replaced with magnitude.

[tex]Average\ speed=Total\ distance/Total\ time[/tex]

Average velocity is a vector quantity. The change in position or displacement divided by the periods of time during which the change occurs is known as average velocity. Depending on how the displacement has been adjusted, the average velocity could be either positive or negative. Meters per second (m/s), or average velocity, is the SI measure for speed.

[tex]Average\ Velocity=Total\ displacement/Total\ time[/tex]

According to the question,

Ship one has an average velocity of 35 km/h for 2.2 hours.

So, total distance covered by ship one = 35 × 2.2 = 77 km.

Ship one has an average velocity of 26 km/h for 2.5 hours.

So, total distance covered by ship one = 26 × 2.5 = 65 km

Hence, the distance covered by ship one is 77 km and ship two will cover 65 km.

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How long would it take you to travel 163 meters at a speed of 33 meters per second?

Answers

Speed=

[tex]33m {s}^{ -1} [/tex]

Distance=

[tex]163m[/tex]

speed= distance/time

So,

Time= distance/speed

Time= 163/33

=

[tex]\huge\underline\mathtt\colorbox{cyan}{4.9393s}[/tex]

can a tree live on another planet?

Answers

Answer:

It depends on the quality of the elements upon the planet. They require carbon dioxide and sun light to photosynthesize and perform aerobic respiration with other components. However, there are some current planets that consist plants upon their surface.

The acceleration of free fall on Mars is 3.7 m/s?.
What is the weight of a 100g mass on Mars?
A 0.037N
B
0.37 N
C 37 N
D
370N

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

Given :

Acceleration (a) = 3.7 m/s²

mass (m) = 100g = 0.1 kg

weight is equal to :

[tex]m \times a[/tex]

[tex]3.7 \times .01[/tex]

[tex]0.37 \: \: \: N[/tex]

Weight of the object is 0.37 Newtons ~

Correct choice is B

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